From nhernandez@hanse.de Mon Jan 16 19:03:32 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!hanse!nhernandez From: nhernandez@hanse.de (Nadia Hernández) Newsgroups: comp.sys.m68k Subject: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jan16.190332.8207@hanse.de> Date: Mon, 16 Jan 1995 19:03:32 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. By setting up Paula's audio DMA to double-buffer incoming 8-bit samples, the 68020 has plenty of cycles left for the Costas loop. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- Nadia Hernández -- Hanse-Netzwerk Hamburg "Row 14. No joke." From mreyes@panix.com Tue Jan 17 06:45:32 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!panix!mreyes From: mreyes@panix.com (Mei Reyes) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jan17.064532.7243@panix.com> Date: Tue, 17 Jan 1995 06:45:32 GMT References: <1995Jan16.190332.8207@hanse.de> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jan16.190332.8207@hanse.de>, nhernandez@hanse.de (Nadia Hernández) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. > By setting up Paula's audio DMA to double-buffer incoming 8-bit samples, the 68020 has plenty of cycles left for the Costas loop. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Mei Reyes -- Public Access Unix of New York "The carrier frequency does not drift by accident." From fdubois@clari.net Thu Jan 19 09:26:32 1995 Path: ashpoly!cascade!transat!ukc!fennimore!clari!fdubois From: fdubois@clari.net (Freya Dubois) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jan19.092632.5595@clari.net> Date: Thu, 19 Jan 1995 09:26:32 GMT References: <1995Jan16.190332.8207@hanse.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jan16.190332.8207@hanse.de>, nhernandez@hanse.de (Nadia Hernández) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. > By setting up Paula's audio DMA to double-buffer incoming 8-bit samples, the 68020 has plenty of cycles left for the Costas loop. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Freya Dubois *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From amacdonald@u-tokyo.ac.jp Sat Jan 21 09:17:32 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!u-tokyo!amacdonald From: amacdonald@u-tokyo.ac.jp (Amy MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jan21.091732.9842@u-tokyo.ac.jp> Date: Sat, 21 Jan 1995 09:17:32 GMT References: <1995Jan16.190332.8207@hanse.de> <1995Jan17.064532.7243@panix.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jan17.064532.7243@panix.com>, mreyes@panix.com (Mei Reyes) writes: > Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- === Amy MacDonald === Dept of Electrical Engineering, University of Tokyo Department of Information Science "5 sigma is a discovery. 7 is a question."